/* bindsmith landing — Material 3 (copper seed) — tonal, not glass */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bs-surface);
  color: var(--bs-on-surface);
  font-family: var(--bs-font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--bs-primary);
  text-decoration: none;
}

a:hover {
  color: var(--bs-primary-hover);
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 72px; /* room for mobile NavigationBar */
}

.wrap {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.wrap-wide {
  max-width: 960px;
}

/* —— M3 AppBar —— */
.top.m3-appbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 56px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--bs-outline-variant);
  background: color-mix(in srgb, var(--bs-surface-bright) 92%, transparent);
  backdrop-filter: blur(8px);
  box-shadow: none;
}

.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 0;
  min-height: 56px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--bs-on-surface);
  border-radius: var(--bs-radius-sm);
  padding: 0.25rem 0.35rem 0.25rem 0.15rem;
}

.brand:hover {
  color: var(--bs-on-surface);
  background: var(--bs-state-hover);
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: var(--bs-radius-md);
  box-shadow: var(--bs-elev-1);
}

.brand-name {
  font-family: var(--bs-font-sans);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav {
  display: flex;
  gap: 0.15rem;
  font-family: var(--bs-font-sans);
  font-size: 0.875rem;
  font-weight: 500;
}

.nav a {
  color: var(--bs-on-surface-variant);
  padding: 0.45rem 0.7rem;
  border-radius: var(--bs-radius-full);
  position: relative;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav a:hover {
  color: var(--bs-on-surface);
  background: var(--bs-state-hover);
}

.nav a:active {
  background: var(--bs-state-press);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-width: 40px;
  min-height: 40px;
  padding: 0.35rem 0.75rem;
  border-radius: var(--bs-radius-full);
  border: none;
  background: var(--bs-surface-container);
  color: var(--bs-on-surface-variant);
  font-family: var(--bs-font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.theme-toggle:hover {
  color: var(--bs-primary);
  background: var(--bs-surface-container-high);
}

.theme-toggle:active {
  background: var(--bs-state-press);
}

.theme-toggle:focus-visible {
  box-shadow: var(--bs-focus-ring);
  outline: none;
}

.theme-toggle-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex: none;
}

.theme-toggle[data-theme="light"] .icon-moon,
.theme-toggle[data-theme="dark"] .icon-sun,
.theme-toggle[data-theme="system"] .icon-sun,
.theme-toggle[data-theme="system"] .icon-moon {
  display: none;
}

.theme-toggle[data-theme="light"] .icon-sun {
  display: block;
}

.theme-toggle[data-theme="dark"] .icon-moon {
  display: block;
}

.theme-toggle[data-theme="system"] .icon-system {
  display: block;
}

.theme-toggle:not([data-theme="system"]) .icon-system {
  display: none;
}

/* —— Hero —— */
.hero {
  position: relative;
  padding: 64px 0 48px;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, var(--bs-primary-container), transparent 70%);
}

.hero.hero-terminal {
  min-height: min(68vh, 600px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 0 56px;
  background: #121416;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-terminal-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
  display: block;
  opacity: 0.78;
  filter: saturate(1) contrast(1.08);
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--bs-surface) 82%, transparent) 0%,
      color-mix(in srgb, var(--bs-surface) 48%, transparent) 38%,
      color-mix(in srgb, var(--bs-surface) 72%, transparent) 62%,
      color-mix(in srgb, var(--bs-surface) 92%, transparent) 100%),
    radial-gradient(ellipse 65% 50% at 50% 42%,
      color-mix(in srgb, var(--bs-surface) 42%, transparent),
      transparent 72%);
}

html[data-theme="dark"] .hero-scrim,
html:not([data-theme="light"]) .hero-scrim {
  background:
    linear-gradient(180deg,
      rgba(18, 20, 22, 0.88) 0%,
      rgba(18, 20, 22, 0.48) 36%,
      rgba(18, 20, 22, 0.62) 58%,
      rgba(18, 20, 22, 0.92) 100%),
    radial-gradient(ellipse 65% 50% at 50% 42%, rgba(18, 20, 22, 0.28), transparent 72%);
}

html[data-theme="light"] .hero-scrim {
  background:
    linear-gradient(180deg,
      rgba(247, 244, 239, 0.92) 0%,
      rgba(247, 244, 239, 0.58) 36%,
      rgba(247, 244, 239, 0.72) 58%,
      rgba(247, 244, 239, 0.95) 100%),
    radial-gradient(ellipse 65% 50% at 50% 42%, rgba(247, 244, 239, 0.38), transparent 72%);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-mark {
  width: 72px;
  height: 72px;
  margin: 0 auto 18px;
  display: block;
  border-radius: var(--bs-radius-xl);
  box-shadow: var(--bs-elev-3);
}

.hero-wordmark {
  height: 28px;
  width: auto;
  margin: 0 auto 18px;
  display: none; /* gallery / brand asset; site uses theme-aware text */
}

.hero-wordmark-text {
  display: block;
  margin: 0 auto 18px;
  font-family: var(--bs-font-sans);
  font-size: 1.55rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--bs-on-surface);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;
  margin: 0 0 1.1rem;
}

.status-chip,
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--bs-font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1;
  padding: 0.38rem 0.65rem;
  border-radius: var(--bs-radius-full);
  border: 1px solid transparent;
}

.status-chip {
  background: var(--bs-primary-container);
  color: var(--bs-on-primary-container);
  padding-left: 0.45rem;
}

.status-chip::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--bs-primary);
}

.badge-flutter {
  background: var(--bs-secondary-container);
  color: var(--bs-on-secondary-container);
}

.badge-dart {
  background: var(--bs-secondary-container);
  color: var(--bs-secondary);
}

.badge-m3 {
  background: var(--bs-surface-container);
  color: var(--bs-on-surface-variant);
  border-color: var(--bs-outline-variant);
}

.hero-pitch {
  margin: 0;
  font-family: var(--bs-font-sans);
  font-size: clamp(1.65rem, 4.2vw, 2.15rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: var(--bs-on-surface);
  text-shadow: 0 1px 0 color-mix(in srgb, var(--bs-surface) 55%, transparent);
}

.hero-sub {
  margin: 14px auto 0;
  max-width: 36rem;
  font-size: 16px;
  color: var(--bs-on-surface-variant);
  text-shadow: 0 1px 0 color-mix(in srgb, var(--bs-surface) 45%, transparent);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: center;
  align-items: center;
  margin-top: 1.85rem;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.6rem 1.35rem;
  border-radius: var(--bs-radius-sm);
  font-family: var(--bs-font-sans);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.cta-filled {
  background: var(--bs-primary);
  color: var(--bs-on-primary);
  box-shadow: var(--bs-elev-1);
}

.cta-filled:hover {
  background: var(--bs-primary-hover);
  color: var(--bs-on-primary);
  box-shadow: var(--bs-elev-2);
}

.cta-tonal {
  background: var(--bs-primary-container);
  color: var(--bs-on-primary-container);
}

.cta-tonal:hover {
  background: var(--bs-surface-container-high);
  color: var(--bs-primary);
}

.cta-outlined {
  background: transparent;
  color: var(--bs-primary);
  border-color: var(--bs-outline);
}

.cta-outlined:hover {
  background: var(--bs-state-hover);
  border-color: var(--bs-primary);
  color: var(--bs-primary-hover);
}

.cta:focus-visible {
  box-shadow: var(--bs-focus-ring);
  outline: none;
}

.cta:active::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bs-state-press);
}

/* —— Sections —— */
.section-label {
  position: relative;
  margin: 0 0 8px;
  padding-bottom: 12px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bs-fg-subtle);
  text-align: center;
}

.section-label::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: min(8rem, 32%);
  height: 3px;
  border-radius: var(--bs-radius-full);
  background: var(--bs-primary);
  opacity: 0.55;
}

.section-lead {
  margin: 0 auto 1.35rem;
  max-width: 32rem;
  text-align: center;
  font-size: 0.95rem;
  color: var(--bs-on-surface-variant);
}

/* Platforms */
.platforms {
  padding: 32px 0 52px;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.m3-card {
  border-radius: var(--bs-radius-lg);
  background: var(--bs-surface-container-low);
  box-shadow: var(--bs-elev-1);
  border: 1px solid var(--bs-outline-variant);
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 16px 18px;
  background: var(--bs-surface-container-low);
  transition: background 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.platform-card:hover {
  background: var(--bs-surface-container-high);
  box-shadow: var(--bs-elev-2);
  border-color: var(--bs-outline);
}

.platform-pip {
  width: 2rem;
  height: 2rem;
  border-radius: var(--bs-radius-sm);
  background: var(--bs-primary-container);
  color: var(--bs-on-primary-container);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--bs-font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  box-shadow: var(--bs-elev-1);
}

.platform-pip::before {
  content: attr(data-platform);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 0.55rem;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  padding: 0 2px;
}

.platform-pip[data-platform="android"] { background: var(--bs-primary-container); color: var(--bs-on-primary-container); }
.platform-pip[data-platform="ios"] { background: var(--bs-tertiary-container); color: var(--bs-on-tertiary-container); }
.platform-pip[data-platform="web"] { background: var(--bs-secondary-container); color: var(--bs-on-secondary-container); }
.platform-pip[data-platform="windows"] { background: var(--bs-surface-container-high); color: var(--bs-secondary); }
.platform-pip[data-platform="macos"] { background: var(--bs-primary-container); color: var(--bs-primary); }
.platform-pip[data-platform="linux"] { background: var(--bs-surface-container); color: var(--bs-on-surface-variant); }

.platform-name {
  font-family: var(--bs-font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--bs-on-surface);
}

.platform-slug {
  font-family: var(--bs-font-mono);
  font-size: 0.7rem;
  color: var(--bs-fg-subtle);
  letter-spacing: 0.04em;
}

/* CLI / YAML */
.sample {
  padding: 0 0 52px;
}

.card-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.code-card {
  background: var(--bs-code-bg);
  border-radius: var(--bs-radius-lg);
  border: 1px solid var(--bs-outline);
  box-shadow: var(--bs-elev-2);
  overflow: hidden;
}

.code-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--bs-font-mono);
  font-size: 12px;
  color: var(--bs-fg-subtle);
  background: rgba(255, 255, 255, 0.04);
}

.code-card-header .tag {
  color: var(--bs-code-fg);
  background: rgba(200, 121, 65, 0.18);
  padding: 0.2rem 0.5rem;
  border-radius: var(--bs-radius-full);
}

.code-card pre {
  margin: 0;
  padding: 20px 16px;
  overflow-x: auto;
  font-family: var(--bs-font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: #ede8e1;
}

.code-card .prompt {
  color: var(--bs-code-fg);
}

.code-card .dim {
  color: #8a8278;
}

.code-card .ok {
  color: #6BBF7A;
}

/* Features */
.features {
  padding: 8px 0 56px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.feature-card {
  padding: 20px 20px 22px;
  background: var(--bs-surface-container-low);
  text-align: left;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.feature-card:hover {
  background: var(--bs-surface-container-high);
  box-shadow: var(--bs-elev-2);
}

.feature-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 1.5rem;
  padding: 0 0.45rem;
  border-radius: var(--bs-radius-full);
  font-family: var(--bs-font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--bs-on-primary);
  background: var(--bs-primary);
  margin-bottom: 0.75rem;
  box-shadow: var(--bs-elev-1);
}

.feature-title {
  margin: 0 0 0.45rem;
  font-family: var(--bs-font-sans);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--bs-on-surface);
}

.feature-body {
  margin: 0;
  font-size: 0.9rem;
  color: var(--bs-on-surface-variant);
  line-height: 1.45;
}

/* —— M3 NavigationBar (mobile) —— */
.m3-nav-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  display: none;
  height: 64px;
  background: var(--bs-surface-container);
  border-top: 1px solid var(--bs-outline-variant);
  box-shadow: var(--bs-elev-2);
  padding: 0 8px env(safe-area-inset-bottom, 0);
}

.m3-nav-bar-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  height: 64px;
}

.m3-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--bs-on-surface-variant);
  font-family: var(--bs-font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  border-radius: var(--bs-radius-xl);
  margin: 6px 2px;
  transition: background 0.15s ease, color 0.15s ease;
}

.m3-nav-item:hover {
  background: var(--bs-state-hover);
  color: var(--bs-on-surface);
}

.m3-nav-item[aria-current="page"],
.m3-nav-item.is-active {
  color: var(--bs-on-primary-container);
}

.m3-nav-item[aria-current="page"] .m3-nav-icon,
.m3-nav-item.is-active .m3-nav-icon {
  background: var(--bs-primary-container);
  color: var(--bs-on-primary-container);
}

.m3-nav-icon {
  width: 40px;
  height: 28px;
  border-radius: var(--bs-radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
  transition: background 0.15s ease;
}

/* Footer */
.footer {
  margin-top: auto;
  padding: 28px 0 36px;
  border-top: 1px solid var(--bs-outline-variant);
  background: var(--bs-surface-container-low);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--bs-on-surface-variant);
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-brand img {
  width: 28px;
  height: 28px;
  border-radius: var(--bs-radius-sm);
  box-shadow: var(--bs-elev-1);
}

.footer-links {
  display: flex;
  gap: 20px;
  font-family: var(--bs-font-sans);
  font-size: 0.85rem;
  font-weight: 500;
}

.footer-links a {
  color: var(--bs-on-surface-variant);
  padding: 0.35rem 0.5rem;
  border-radius: var(--bs-radius-full);
}

.footer-links a:hover {
  color: var(--bs-primary);
  background: var(--bs-state-hover);
}

@media (max-width: 720px) {
  .platform-grid,
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .m3-nav-bar {
    display: block;
  }
}

@media (max-width: 520px) {
  .nav {
    display: none;
  }

  .hero {
    padding: 32px 0 24px;
  }

  .hero.hero-terminal {
    min-height: min(58vh, 480px);
    padding: 40px 0 32px;
    align-items: flex-start;
  }

  .hero-terminal-img {
    object-position: center 18%;
    opacity: 0.55;
  }

  .hero-mark {
    width: 56px;
    height: 56px;
    margin-bottom: 12px;
  }

  .hero-wordmark-text {
    margin-bottom: 12px;
    font-size: 1.35rem;
  }

  .hero-pitch {
    font-size: 1.5rem;
  }

  .cta-row {
    margin-top: 1.25rem;
    gap: 0.5rem;
  }

  .platform-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .page {
    padding-bottom: 80px;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .top.m3-appbar,
  .m3-nav-bar {
    background: var(--bs-surface-bright);
    backdrop-filter: none;
  }

  .hero {
    background: var(--bs-surface);
  }

  .hero-terminal-img {
    opacity: 0.35;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .m3-nav-indicator {
    transition: none;
  }
}


/* —— v3 denser AppBar + avatar / icon actions —— */
.m3-appbar-dense {
  height: 64px;
}
.m3-appbar-dense .top-inner {
  min-height: 64px;
}
.m3-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--bs-radius-full);
  color: var(--bs-on-surface-variant);
  background: transparent;
  border: none;
  transition: background 0.15s ease, color 0.15s ease;
}
.m3-icon-btn:hover {
  background: var(--bs-state-hover);
  color: var(--bs-primary);
}
.m3-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--bs-radius-full);
  background: var(--bs-primary-container);
  color: var(--bs-on-primary-container);
  font-family: var(--bs-font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  box-shadow: var(--bs-elev-1);
  letter-spacing: 0.02em;
}

/* TextButton */
.cta-text {
  background: transparent;
  color: var(--bs-primary);
  border-color: transparent;
  box-shadow: none;
  min-height: 40px;
  padding: 0.5rem 0.85rem;
}
.cta-text:hover {
  background: var(--bs-state-hover);
  color: var(--bs-primary-hover);
}
.m3-text-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--bs-radius-sm);
  font-family: var(--bs-font-sans);
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--bs-primary);
  background: transparent;
  border: none;
  cursor: pointer;
}
.m3-text-btn:hover {
  background: var(--bs-state-hover);
  color: var(--bs-primary-hover);
}

/* Snackbar-like tip strip */
.m3-snackbar {
  background: var(--bs-inverse-surface);
  color: var(--bs-inverse-on-surface);
  box-shadow: var(--bs-elev-2);
}
.m3-snackbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 10px 0;
  min-height: 48px;
}
.m3-snackbar-msg {
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.35;
}
.m3-snackbar-action {
  color: var(--bs-primary-muted);
  flex: none;
  white-space: nowrap;
}
.m3-snackbar-action:hover {
  color: var(--bs-primary);
  background: rgba(232, 160, 92, 0.16);
}

/* FilterChips */
.filter-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 0 0 1.25rem;
}
.m3-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 40px;
  padding: 0.35rem 0.9rem;
  border-radius: var(--bs-radius-full);
  border: 1px solid var(--bs-outline);
  background: var(--bs-surface-container-low);
  color: var(--bs-on-surface-variant);
  font-family: var(--bs-font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.m3-filter-chip .filter-chip-check {
  display: none;
  font-size: 0.75rem;
  line-height: 1;
}
.m3-filter-chip.is-selected,
.m3-filter-chip[aria-pressed="true"] {
  background: var(--bs-secondary-container);
  color: var(--bs-on-secondary-container);
  border-color: transparent;
  box-shadow: var(--bs-elev-1);
}
.m3-filter-chip.is-selected .filter-chip-check,
.m3-filter-chip[aria-pressed="true"] .filter-chip-check {
  display: inline;
}
.m3-filter-chip:hover {
  background: var(--bs-surface-container-high);
  border-color: var(--bs-outline);
}
.m3-filter-chip.is-selected:hover {
  background: var(--bs-secondary-container);
}

/* Outlined card variant */
.m3-card-outlined {
  background: var(--bs-surface);
  border: 1px solid var(--bs-outline);
  box-shadow: none;
}
.m3-card-outlined:hover {
  background: var(--bs-surface-container-low);
  box-shadow: var(--bs-elev-1);
}

/* Buttons detail showcase */
.buttons-detail {
  padding: 8px 0 40px;
}
.btn-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
  padding: 24px 20px;
  background: var(--bs-surface-container-low);
}

/* Surface ladder */
.surface-ladder {
  padding: 8px 0 56px;
}
.surface-ladder-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}
.surface-swatch {
  border-radius: var(--bs-radius-md);
  min-height: 72px;
  display: flex;
  align-items: flex-end;
  padding: 10px 12px;
  font-family: var(--bs-font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--bs-on-surface-variant);
  border: 1px solid var(--bs-outline-variant);
  box-shadow: var(--bs-elev-1);
}
.surface-lowest { background: var(--bs-surface-container-lowest); }
.surface-low { background: var(--bs-surface-container-low); }
.surface-container { background: var(--bs-surface-container); }
.surface-high { background: var(--bs-surface-container-high); }
.surface-highest { background: var(--bs-surface-container-highest); }

/* M3 NavigationBar selected pill indicator */
.m3-nav-item {
  position: relative;
}
.m3-nav-indicator {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 56px;
  height: 28px;
  border-radius: var(--bs-radius-full);
  background: var(--bs-secondary-container);
  z-index: 0;
  transition: transform 0.18s ease;
  pointer-events: none;
}
.m3-nav-item.is-active .m3-nav-indicator,
.m3-nav-item[aria-current="page"] .m3-nav-indicator {
  transform: translateX(-50%) scaleX(1);
}
.m3-nav-item .m3-nav-icon,
.m3-nav-item span:last-child {
  position: relative;
  z-index: 1;
}
.m3-nav-item.is-active .m3-nav-icon,
.m3-nav-item[aria-current="page"] .m3-nav-icon {
  background: transparent;
  color: var(--bs-on-secondary-container);
}
.m3-nav-item.is-active,
.m3-nav-item[aria-current="page"] {
  color: var(--bs-on-secondary-container);
}

@media (max-width: 720px) {
  .surface-ladder-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .m3-snackbar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }
  .m3-avatar,
  .m3-icon-btn {
    display: none;
  }
}
@media (max-width: 520px) {
  .surface-ladder-row {
    grid-template-columns: 1fr 1fr;
  }
}


/* —— Hero terminal overlays —— */
.hero .cta-filled {
  box-shadow: var(--bs-elev-2);
}
.hero .cta-text {
  color: var(--bs-on-surface);
  background: color-mix(in srgb, var(--bs-surface) 55%, transparent);
  border-color: transparent;
  min-height: 40px;
}
.hero .cta-text:hover {
  background: color-mix(in srgb, var(--bs-surface) 75%, transparent);
  color: var(--bs-primary);
}
.btn-showcase {
  justify-content: center;
  gap: 1rem;
}


/* —— Polish: focus + hairlines —— */
.m3-filter-chip:focus-visible,
.m3-icon-btn:focus-visible,
.m3-text-btn:focus-visible,
.brand:focus-visible,
.nav a:focus-visible {
  box-shadow: var(--bs-focus-ring);
  outline: none;
}

.platform-card,
.feature-card,
.code-card,
.m3-card {
  border-radius: var(--bs-radius-lg, 20px);
}

.platform-card {
  border: 1px solid var(--bs-outline-variant);
}

.m3-card-outlined {
  border: 1px solid var(--bs-outline);
  box-shadow: none;
}

.m3-avatar {
  width: 40px;
  height: 40px;
}